JPS54160079A - Production of electric bulb - Google Patents
Production of electric bulbInfo
- Publication number
- JPS54160079A JPS54160079A JP6774478A JP6774478A JPS54160079A JP S54160079 A JPS54160079 A JP S54160079A JP 6774478 A JP6774478 A JP 6774478A JP 6774478 A JP6774478 A JP 6774478A JP S54160079 A JPS54160079 A JP S54160079A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- bulb
- exhaust tube
- foaming gas
- adhesive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To prevent contamination in bulb by hardening the adhesive flushing inside thereof with gas followed by flashing with a foaming gas energizing the filament when the lens thereof and a reflector are bonded together with a resin adhesive.
CONSTITUTION: In a shield beam type electric bulb, a lens 1 and a reflector 2 are bonded together with an epoxy regin adhesive 13. Then, the bulb is placed into a heating furnace at about 200°C where a foaming gas, a mixture of N2 and H2, from a foaming gas cylinder is fed through a gas feed tubule 10 inserted into an exhaust tube 8. Admitted into the bulb, the mixed gas flushes the inside thereof and then, released through a clearance in the exhaust tube 8. As it is kept in the heating furnaces 16 for 10 to 20 minutes, the epoxy resin adhesive 3 will be hardened by heat. After the withdrawal from the furnace, it is lighted energizing the W filament. the inside thereof is heated at a high temperature with the highly heat conductive foaming gas. Several minutes following the degassing, the lighting is stopped, and Ar gas is delivered thereinto from a sealed gas cylinder 14 for reduction with the foaming gas. Thereafter, the exhaust tube is sealed up.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6774478A JPS54160079A (en) | 1978-06-07 | 1978-06-07 | Production of electric bulb |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6774478A JPS54160079A (en) | 1978-06-07 | 1978-06-07 | Production of electric bulb |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54160079A true JPS54160079A (en) | 1979-12-18 |
Family
ID=13353752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6774478A Pending JPS54160079A (en) | 1978-06-07 | 1978-06-07 | Production of electric bulb |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54160079A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4578043A (en) * | 1984-03-05 | 1986-03-25 | Stanley Electric Co., Ltd. | Method and apparatus for manufacturing light bulb with bead sealing gas |
-
1978
- 1978-06-07 JP JP6774478A patent/JPS54160079A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4578043A (en) * | 1984-03-05 | 1986-03-25 | Stanley Electric Co., Ltd. | Method and apparatus for manufacturing light bulb with bead sealing gas |
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